diff --git a/android/guava-tests/test/com/google/common/net/HttpHeadersTest.java b/android/guava-tests/test/com/google/common/net/HttpHeadersTest.java
index ef32ccfe308b..2a18eabf364b 100644
--- a/android/guava-tests/test/com/google/common/net/HttpHeadersTest.java
+++ b/android/guava-tests/test/com/google/common/net/HttpHeadersTest.java
@@ -51,8 +51,8 @@ public void testConstantNameMatchesString() throws Exception {
             .buildOrThrow();
     ImmutableSet<String> uppercaseAcronyms =
         ImmutableSet.of(
-            "CH", "ID", "DNT", "DNS", "DPR", "ECT", "HTTP2", "IP", "MD5", "P3P", "RTT", "TE", "UA",
-            "UID", "URL", "WWW", "XSS");
+            "CH", "ID", "DNT", "DNS", "DPR", "ECT", "GPC", "HTTP2", "IP", "MD5", "P3P", "RTT", "TE",
+            "UA", "UID", "URL", "WWW", "XSS");
     assertConstantNameMatchesString(HttpHeaders.class, specialCases, uppercaseAcronyms);
   }
 
diff --git a/android/guava/src/com/google/common/net/HttpHeaders.java b/android/guava/src/com/google/common/net/HttpHeaders.java
index a66c153879d8..ef82d0813c8d 100644
--- a/android/guava/src/com/google/common/net/HttpHeaders.java
+++ b/android/guava/src/com/google/common/net/HttpHeaders.java
@@ -874,6 +874,15 @@ private ReferrerPolicyValues() {}
    */
   public static final String SEC_AD_AUCTION_FETCH = "Sec-Ad-Auction-Fetch";
 
+  /**
+   * The HTTP <a
+   * href="https://privacycg.github.io/gpc-spec/#the-sec-gpc-header-field-for-http-requests">{@code
+   * Sec-GPC}</a> header field name.
+   *
+   * @since NEXT
+   */
+  public static final String SEC_GPC = "Sec-GPC";
+
   /**
    * The HTTP <a
    * href="https://wicg.github.io/turtledove/#handling-direct-from-seller-signals">{@code
diff --git a/guava-tests/test/com/google/common/net/HttpHeadersTest.java b/guava-tests/test/com/google/common/net/HttpHeadersTest.java
index ef32ccfe308b..2a18eabf364b 100644
--- a/guava-tests/test/com/google/common/net/HttpHeadersTest.java
+++ b/guava-tests/test/com/google/common/net/HttpHeadersTest.java
@@ -51,8 +51,8 @@ public void testConstantNameMatchesString() throws Exception {
             .buildOrThrow();
     ImmutableSet<String> uppercaseAcronyms =
         ImmutableSet.of(
-            "CH", "ID", "DNT", "DNS", "DPR", "ECT", "HTTP2", "IP", "MD5", "P3P", "RTT", "TE", "UA",
-            "UID", "URL", "WWW", "XSS");
+            "CH", "ID", "DNT", "DNS", "DPR", "ECT", "GPC", "HTTP2", "IP", "MD5", "P3P", "RTT", "TE",
+            "UA", "UID", "URL", "WWW", "XSS");
     assertConstantNameMatchesString(HttpHeaders.class, specialCases, uppercaseAcronyms);
   }
 
diff --git a/guava/src/com/google/common/net/HttpHeaders.java b/guava/src/com/google/common/net/HttpHeaders.java
index a66c153879d8..ef82d0813c8d 100644
--- a/guava/src/com/google/common/net/HttpHeaders.java
+++ b/guava/src/com/google/common/net/HttpHeaders.java
@@ -874,6 +874,15 @@ private ReferrerPolicyValues() {}
    */
   public static final String SEC_AD_AUCTION_FETCH = "Sec-Ad-Auction-Fetch";
 
+  /**
+   * The HTTP <a
+   * href="https://privacycg.github.io/gpc-spec/#the-sec-gpc-header-field-for-http-requests">{@code
+   * Sec-GPC}</a> header field name.
+   *
+   * @since NEXT
+   */
+  public static final String SEC_GPC = "Sec-GPC";
+
   /**
    * The HTTP <a
    * href="https://wicg.github.io/turtledove/#handling-direct-from-seller-signals">{@code